ASTROSAT CZTI

Data Quality Report

Orbit 18662

Creation date: 2024-06-27T17:53:06.769913
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A06_005T01_9000002788_18662cztM0_level2.evt modeM0/AS1A06_005T01_9000002788_18662cztM0_level2_quad_clean.evt
Size (bytes)738,480,960107,769,600
Size704.3 MB 102.8 MB
Events in quadrant A3,751,011741,981
Events in quadrant B3,684,609754,206
Events in quadrant C3,767,549719,104
Events in quadrant D10,640,985512,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162103
B0160163
C0162643
D0369173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7687640.832574%
B7688791.027575%
C76881131.469823%
D7688293538.176379%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8497 7690 7 7 0.08% 0.09%
B 8498 7691 5 5 0.06% 0.07%
C 8498 7691 10 10 0.12% 0.13%
D 8497 7688 2698 2698 31.75% 35.09%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 192 157283 848.62 915 896 184.3
A 0 13 26732 140.2 915 896 184.3
A 6 16 25593 134.02 915 896 184.3
B 4 80 60082 338.17 918 895 175.0
B 12 111 21681 118.76 918 895 175.0
B 11 111 18538 100.81 918 895 175.0
C 9 221 147408 709.83 877 883 206.4
C 14 238 138070 664.6 877 883 206.4
C 3 233 38693 183.17 877 883 206.4
D 7 238 7896779 47255.23 689 669 167.1
D 12 110 96840 575.55 689 669 167.1
D 2 234 26496 154.56 689 669 167.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter